string(251) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=21%E5%B9%B4%E5%9B%9B%E5%B7%9D%E4%BA%8C%E5%BB%BA%E6%B3%95%E8%A7%84%E7%AD%94%E6%A1%88 => Failed to connect to 101.89.117.144 port 38208: Connection refused"
21年四川二建法规答案
